in the picture you can see the electric circuit.(adsbygoogle = window.adsbygoogle || []).push({});

i asked to find the current in R3.

i mark 4 circle (a b c d)

and i got the 4 equations (shown in blue color).

in equation C, i not sure if is equal to 100 or to 0, but i tried with both of them.

after i found this equations i used this calculator:http://wims.unice.fr/wims/wims.cgi?session=YCB515D978.2&+lang=en&+module=tool/linear/linsolver.en

to get the 4 variable.

but for some reason i am not get the correct answer is should be 6.666A.

what i do wrong?

thanks.

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# What i do wrong(find the current)

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